Windows 8 and 8.1 Forums


Clock changes every 10 minutes?

  1. #1

    Clock changes every 10 minutes?


    I've got my first freelancer job tomorrow at 1800.

    My client has Windows 8 installed (with Windows 7 desktop, lolwut?), it's connected to the internet.

    The clock changes every 10 minutes, despite being synchronised to internet time.

    Any heads up?

    Edit:

    Here's some extra, straight forward information;
    Machine -
    HP Pavilion G6
    Time setting - London
    Problem - Clock (System Time) keeps changing incorrectly after about 10 to 30 minutes.
    Last edited by Conal; 20 Sep 2013 at 19:01.

      My System SpecsSystem Spec

  2. #2


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    Replace the Battery on the MB.
      My System SpecsSystem Spec

  3. #3


    Quote Originally Posted by topgundcp View Post
    Replace the Battery on the MB.
    Aright, thanks. That's what everyone else was saying. So is this a well known & understood symptom?
      My System SpecsSystem Spec

  4. #4


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    Battery serves:

    1. To feed the configuration memory (CMOS)
    2. To feed the real time clock of the computer.


    Make sure to replace it with correct type. They physically look the same but the types are different. Look at the number stamped on the battery for correct type.
      My System SpecsSystem Spec

  5. #5


    Toronto, Canada. Born in the U.K.
    Posts : 691
    Win 10 Pro + Win 7 Ult SP1 (x64)


    Your BIOS will most likely reset to default...if you have any settings that are setup differently from when it was installed.
      My System SpecsSystem Spec

  6. #6


    If the battery dies, not only the time but all the settings will revert to default so most probably it would not boot either. Also the settings would not change while computer is on. Most likely problem is in time zone setting in windows, every time it synchronizes time over internet, hence the 10 minute interval.
      My System SpecsSystem Spec

  7. #7


    Quote Originally Posted by topgundcp View Post
    Battery serves:

    1. To feed the configuration memory (CMOS)
    2. To feed the real time clock of the computer.


    Make sure to replace it with correct type. They physically look the same but the types are different. Look at the number stamped on the battery for correct type.
    I never had to perform this, but I had a friend back in the mid 90's that had to. He stated that one had to reflash the BIOS if the battery is removed. I never did follow up on how it went for him. By what you're saying and ExBrit's post that's not true > It just erases any changed settings? Has the technology changed since then so far as BIOS chips and I missed it?

    Via my friend's statement I assumed they're needed to be an electrical feed to hold the memory of the "whole" BIOS file. Then again today I know we have all sorts of flash memory that doesn't need an electrical feed.
      My System SpecsSystem Spec

  8. #8


    Toronto, Canada. Born in the U.K.
    Posts : 691
    Win 10 Pro + Win 7 Ult SP1 (x64)


    To be honest I've never had to do it....yet....! I don't think it reverts the BIOS to the original version but it will certainly cause the settings to revert to factory. So if any have been altered make note of their settings if possible.
      My System SpecsSystem Spec

  9. #9



    The Contemplator
    (1963-2013)
    Doncaster, UK
    Posts : 638
    Windows 8.1 Pro RTM x64


    That is correct. Removal of the battery only causes the configuration settings to reset themselves to their defaults as encoded in the ROM file. The ROM file is not erased, nor is it reverted back to the initial version. Updating it, if you have done so like me (I have updated mine several times), replaces the existing file with the new one, and so the previous code is no longer present, although you will have to change the configuration settings to suit your system after updating (at the very least, the time/date).
      My System SpecsSystem Spec

  10. #10


    Have to change CMOS batteries all the time. It does not erase BIOS so that you would have to change it, it just looses all the manual settings done to it (That memory is stored in CMOS, something like RAM that battery keeps alive until dead or removed) but only puts everything in the BIOS to factory default. Any changes to BIOS settings are "remembered" in CMOS only.
    BIOS, proper is EEPROM (Electrically Erasable Read Only Memory) that does not need constant power but could be changed by special program and new code written to it. Some even have 2 of them so in case of corruption of one, the other one could be used to correct it.
    I suggest you try with Time Zone settings in windows first. Those batteries for CMOS are supposed to last very long time (like in years).
      My System SpecsSystem Spec

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Clock changes every 10 minutes?
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